分级多孔核壳结构碳包覆氧化镍纳米片的制备及其电化学性能研究
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- 英文论文题名：Preparation and electrochemical performance of hierarchically porous carbon-coated nickel nanoplates
- 论文作者：葛凤燕 ; 孙鸿哲 ; 袁帅
- 英文论文作者：Fengyan Ge ; Hongzhe Sun ; Shuai Yuan ; Key Laboratory of Science & Technology of Eco-Textile ; Ministry of Education ; College of Chemistry ; Chemical Engineering and Biotechnology ; Donghua University
- 年：2016
- 作者机构：生态纺织教育部重点实验室东华大学化学化工与生物工程学院;
- 论文关键词：核壳结构纳米片 ; 分级多孔结构 ; 碳包覆氧化镍 ; 电化学性能
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十九分会：电化学材料
- 语种：中文
- 分类号：TB383.1;TQ138.13
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十九分会 ; 电化学材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：176k
- 原文格式：D
- 会议级别：全国
摘要
纳米复合材料由于其具有特殊结构和优异性能已成为材料领域研究的热点。碳包覆金属/金属氧化物纳米复合材料有效集成了碳层及金属氧化物纳米颗粒二者的优点,在能量储存与转化、吸附等领域有着广泛的应用前景~([1])。本论文以氢氧化镍纳米片为自模板,采用改进的st?ber法和碳化方法相结合,构建了一种核壳结构的碳包覆氧化镍复合纳米片~([2])。结构表征结果表明,NiO@C纳米片具有完整的核壳结构,而且碳壳层和镍核层均具有分级多孔结构。电化学结果表明,NiO@C电极的比电容为337.5 F/g,1000次循环后,其比电容的保持率为85.1%,循环稳定性良好。由于碳层的存在有效地保护了NiO在充放电过程中性能的稳定,延长了电极材料的使用寿命。与其他金属氧化镍/碳复合材料相比,该分级多孔碳包覆金属氧化镍纳米片结构制备过程简单,成本低廉且电化学性能稳定,因而其具有良好的应用前景。
Nanocomposite materials have been researched due to the special structure and superior properties. Carbon-coated metal or metal oxides nanoparticles can be widely applied in areas of energy storage and transformation, adsorption, catalyst and so on. In this paper, core-shell NiO @C nanoplates were prepared through an extension of st?ber method and subsequent calcinating approach, in which Ni(OH)2 are chosen as the templates. The results show that NiO @C have the complete core-shell structure. Electrochemical studies show the specific capacities is 337.5 F/g, and the capacity retentions is 85.1% after 1000 cycles. The presence of the carbon layer protects NiO structure, which extends the life of the electrode material. The as-prepared NiO @C show superior advantages such as low cost, easy preparation and good cyclic stability property, which makes them promising for potential applications.
Nanocomposite materials have been researched due to the special structure and superior properties. Carbon-coated metal or metal oxides nanoparticles can be widely applied in areas of energy storage and transformation, adsorption, catalyst and so on. In this paper, core-shell NiO @C nanoplates were prepared through an extension of st?ber method and subsequent calcinating approach, in which Ni(OH)2 are chosen as the templates. The results show that NiO @C have the complete core-shell structure. Electrochemical studies show the specific capacities is 337.5 F/g, and the capacity retentions is 85.1% after 1000 cycles. The presence of the carbon layer protects NiO structure, which extends the life of the electrode material. The as-prepared NiO @C show superior advantages such as low cost, easy preparation and good cyclic stability property, which makes them promising for potential applications.
引文
[1]Jayaprakash,N.;Jones,W.D.;Moganty,S.S.;Archer,L.A.J.Power Sources.2012,200:53-58.
[2]Sun,H.Z.;Ge,F.Y;Zhao,J.C;Cai,Z.S.Mater.Lett..2016,164:152-155.
[2]Sun,H.Z.;Ge,F.Y;Zhao,J.C;Cai,Z.S.Mater.Lett..2016,164:152-155.